Full throttle and can barely get off the ground.

If havnt really had a whole lot of success with this copter. Eecently it seems that it does not even want to fly. I can get it up in the air for about 40 seconds bwfore it starts to slowly fall untill I have full throttle in and still dropping while it spins down. To me it seems like a battery problem but everything ive read is saying they are fine. All cells balance just fine at the correct voltage andthey are not puffy or anything. I then tried to research esc failure or bad motor but none of what anyone says im experiencing. Motors dont get hot, escs are warm but thats been normal. Any ideas? I had it flying judt fine the ither night, charged the battery and then this. Leads me to belive a battery ussue but would like soneone else opinion.Troy

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • Yet even more confusion. It started out doing its "lack of power" and basically spinning on the ground (yaw) at 3/4 to full throttle I could get it in the air compensating for the excessive yaw. Couldn't really read the amp draw and fly though i did glance back and saw 24A at 3/4 throttle when it was still on the ground. Pulled power to reposition the laptop due to glare from the sun, advanced throttle again and the damn thing flew as if there was no issue. The log should show it spinning and what not in the begging. Have a buddy coming over to monitor the telemetry so I can fly since I don't trust that the copter will remain where I left it in the air just yet.

    2014-02-09 13-36-22.tlog

  • I do have the power module installed. Do I need to have it flying, or full throttle sitting on the ground if it wont fly, and reference the current and voltage on the MP? Its a hex with the older APM and upgraded firmware, batteries are 3cell zippy 30C 8Ah, not sure of the exact weight. Its quite heavy but thats never been an issue in the past and I got 15 to 20 min run times. Motors are 850Kv spinning 11x4.7.
    • Moderator

      Well you need to see the values when you're having the problem, whether you actually flying at that point doesn't really matter. If you've been flying before with this configuration then something has changed in either how much power you have or the throttle is not reaching full. Sometimes one motor might not be working 100% and the APM won't let the others reach full throttle. There are so many possibilities that you'll have to eliminate one at a time starting with the power. If your power is down or low then you'll need to figure out why.

      Have a short flight attempt and post the "tlog" here

  • Moderator

    You need to find a way to measure the battery voltage and current when flying, usually through the Mission Planner if you have a power module. A 'copter needs a certain amount of power (watts = volts x amps) to hover, if you don't get that throughout the whole flight you will not be able to keep it in the air no matter how balanced your cells are or how new or good your batteries are.

    Also give us more details of your machine, battery, cells, weight, motors, props, etc. That will allow us to assist better rather than just guessing.

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @chr1sa: Donkeycar 4.4 released with tons of new features, including path learning (useful with GPS outdoors), better Web and Lidar supp…
Nov 27, 2022
DIY Robocars via Twitter
RT @NXP: We are already biting our nails in anticipation of the #NXPCupEMEA challenge! 😉 Did you know there are great cash prizes to be won…
Nov 24, 2022
DIY Robocars via Twitter
RT @gclue_akira: レースまであと3日。今回のコースは激ムズかも。あと一歩 #jetracer https://t.co/GKcEjImQ3t
Nov 24, 2022
DIY Robocars via Twitter
UC Berkeley's DIY robocar program https://roar.berkeley.edu/
Nov 24, 2022
DIY Robocars via Twitter
RT @chr1sa: The next @DIYRobocars autonomous car race at @circuitlaunch will be on Sat, Dec 10. Thrills, spills and a Brazilian BBQ. Fun…
Nov 24, 2022
DIY Robocars via Twitter
RT @arthiak_tc: Donkey car platform ... Still training uses behavioral cloning #TCXpo #diyrobocar @OttawaAVGroup https://t.co/PHBYwlFlnE
Nov 20, 2022
DIY Robocars via Twitter
RT @emurmur77: Points for style. @donkeycar racing in @diyrobocars at @UCSDJacobs thanks @chr1sa for taking the video. https://t.co/Y2hMyj1…
Nov 20, 2022
DIY Robocars via Twitter
RT @SmallpixelCar: Going to @diyrobocars race at @UCSDJacobs https://t.co/Rrf9vDJ8TJ
Nov 8, 2022
DIY Robocars via Twitter
RT @SmallpixelCar: Race @diyrobocars at @UCSDJacobs thanks @chr1sa for taking the video. https://t.co/kK686Hb9Ej
Nov 8, 2022
DIY Robocars via Twitter
RT @PiWarsRobotics: Presenting: the Hacky Racers Robotic Racing Series in collaboration with #PiWars. Find out more and register your inter…
Oct 23, 2022
DIY Robocars via Twitter
RT @Hacky_Racers: There will be three classes at this event: A4, A2, and Hacky Racer! A4 and A2 are based around UK paper sizing and existi…
Oct 23, 2022
DIY Robocars via Twitter
Oct 23, 2022
DIY Robocars via Twitter
Oct 19, 2022
DIY Robocars via Twitter
Oct 18, 2022
DIY Robocars via Twitter
RT @NeaveEng: Calling all UK based folks interested in @diyrobocars, @f1tenth, @donkey_car, and similar robot racing competitions! @hacky_r…
Oct 13, 2022
DIY Robocars via Twitter
RT @araffin2: 🏎️ After hours of video editing, I'm happy to share a best of my Twitch videos on learning to race with RL. 🏎️ Each part is…
Oct 13, 2022
More…